Improvement in spring attachments for rocking-chairs



v H. GERRISH. Spring Attachment for Rocking-Chairs. No. 212,845.

Patented Mar. 4, 1879.

\NITNEEEEE- I|NVENTUIVIV Nv PEIERS, PHoTmLaTHmRAPnEfl, WASHINGTON. n. G.

UNITE STATES PATENT FFIGE.

HENRY GERRISH, OF BOSTON, MASSACHUSETTS.

IMPROVEMENT lN SPRING ATTACHMENTS FOR ROCKING-CHAIRS.

Specification forming part of Letters Patent No. 212,845, dated March 4,1879 application filed July 26, 1878.

To all whom it may concern:

Be it known that I, HENRY GERRIsH, of the city of Boston, county ofSuffolk, State of Massachusetts, have invented a new and useiulImprovement in Spring Attachments for Rocking-Chairs, Cradles, &c., ofwhich the following is a specification:

The object of my invention is to provide a strong simple springattachment for a chair or cradle which is designed to rock on an underframe instead of the floor.

In the accompanying drawings, in which similar letters of referenceindicate like parts, Figure l is an elevation of my device; Fig. 2, partelevation, showing the method of detaching the spring; Fig. 3, a sectionon line m w of Fig. 1, the spring being removed.

A is a spring, of suitable steel or other elastic wire. B is a hook forattachment to the rocker-frame. O is a cast-metal plate for attachmentto the base-frame of the chair. The spring is made straight at one end,as at a, to fit into a perforation, F, in the plate 0, and when soplaced the spring is prevented from turning or yielding too far by meansof a lip, D, on the plate, against which the spring abuts. The plate isalso provided with a square socket, E, which is inserted into a hole oreavity in the base-frame, its angular shape assisting to prevent theplate 0 from turning.

The operation of my device is as follows I secure two of the cast-ironplates to the baseframe by means of screws, letting in the square partE. I place the straight end a of the springs into the perforation F, andto the other end of the spring I affix the hook, and then secure the eyeof the hook to a rocker. When the chair or cradle is rocked the effectof the springs is to assist in the operation of rocking by bringing thechair to its place on the frame.

What I claim is- The spring attachment for rocking-chairs hereindescribed, consisting of the plate 0, provided with the perforation Fand lip D, in combination with the spring A, having the straight end a,all constructed and operating in the manner and for the purpose setforth.

HENRY GERRISH.

Witnesses:

ALFRED BERNEY, O. H. HAMILTON.

